Estudio comparativo entre las envolventes efectivas obtenidas con ensayos triaxiales consolidado drenado y consolidado-no drenado, con medición de presión de poro, en suelos compactados saturados de la presa Chojampe 2 de la provincia de Los Ríos

Abstract

For the stability study of the slope downstream of the Chojampe 2 dam, under the “operation” charge state, an analysis in effective stresses is required and, therefore, to know the envelopes consolidated drained, CD, of the soils previously saturated and compacted of the material of the curtain. These effective envelopes, can be obtained through the triaxial tests consolidated-drained or consolidated-undrained whit measure of the pore pressure. The choice of one or another test is in function of time of execution of the same. However, the effective envelopes obtained by both paths are not equal, so that a comparative analysis of said envelopes is performed. The tests for this study was provided by the PROMAS, responsible for the study and design the PACALORI project. The enveloped consolidated drained were obtained by analytical method (p´ vs q´) which offers more precision in the result and it concludes thereof, that the envelope consolidated-drained,CD,obtained by the triaxial test Consolidated Drained, It is greater than the Consolidated-Drained, CD envelope, obtained by Consolidated-undrained, CU, test with pore pressure measurement. Therefore, it can be applied to the stability analysis, the results of the Consolidated Drained envelope obtained by the Consolidated undrained test with pore pressure measurement, since it reduces time of investigation of the materials of loan and it is on the safe part.